| 1021 | |
| 1022 | |
| 1023 | static int str_format (lua_State *L) { |
| 1024 | int top = lua_gettop(L); |
| 1025 | int arg = 1; |
| 1026 | size_t sfl; |
| 1027 | const char *strfrmt = luaL_checklstring(L, arg, &sfl); |
| 1028 | const char *strfrmt_end = strfrmt+sfl; |
| 1029 | luaL_Buffer b; |
| 1030 | luaL_buffinit(L, &b); |
| 1031 | while (strfrmt < strfrmt_end) { |
| 1032 | if (*strfrmt != L_ESC) |
| 1033 | luaL_addchar(&b, *strfrmt++); |
| 1034 | else if (*++strfrmt == L_ESC) |
| 1035 | luaL_addchar(&b, *strfrmt++); /* %% */ |
| 1036 | else { /* format item */ |
| 1037 | char form[MAX_FORMAT]; /* to store the format ('%...') */ |
| 1038 | char *buff = luaL_prepbuffsize(&b, MAX_ITEM); /* to put formatted item */ |
| 1039 | int nb = 0; /* number of bytes in added item */ |
| 1040 | if (++arg > top) |
| 1041 | luaL_argerror(L, arg, "no value"); |
| 1042 | strfrmt = scanformat(L, strfrmt, form); |
| 1043 | switch (*strfrmt++) { |
| 1044 | case 'c': { |
| 1045 | nb = l_sprintf(buff, MAX_ITEM, form, (int)luaL_checkinteger(L, arg)); |
| 1046 | break; |
| 1047 | } |
| 1048 | case 'd': case 'i': |
| 1049 | case 'o': case 'u': case 'x': case 'X': { |
| 1050 | lua_Integer n = luaL_checkinteger(L, arg); |
| 1051 | addlenmod(form, LUA_INTEGER_FRMLEN); |
| 1052 | nb = l_sprintf(buff, MAX_ITEM, form, (LUAI_UACINT)n); |
| 1053 | break; |
| 1054 | } |
| 1055 | case 'a': case 'A': |
| 1056 | addlenmod(form, LUA_NUMBER_FRMLEN); |
| 1057 | nb = lua_number2strx(L, buff, MAX_ITEM, form, |
| 1058 | luaL_checknumber(L, arg)); |
| 1059 | break; |
| 1060 | case 'e': case 'E': case 'f': |
| 1061 | case 'g': case 'G': { |
| 1062 | lua_Number n = luaL_checknumber(L, arg); |
| 1063 | addlenmod(form, LUA_NUMBER_FRMLEN); |
| 1064 | nb = l_sprintf(buff, MAX_ITEM, form, (LUAI_UACNUMBER)n); |
| 1065 | break; |
| 1066 | } |
| 1067 | case 'q': { |
| 1068 | addliteral(L, &b, arg); |
| 1069 | break; |
| 1070 | } |
| 1071 | case 's': { |
| 1072 | size_t l; |
| 1073 | const char *s = luaL_tolstring(L, arg, &l); |
| 1074 | if (form[2] == '\0') /* no modifiers? */ |
| 1075 | luaL_addvalue(&b); /* keep entire string */ |
| 1076 | else { |
| 1077 | luaL_argcheck(L, l == strlen(s), arg, "string contains zeros"); |
| 1078 | if (!strchr(form, '.') && l >= 100) { |
| 1079 | /* no precision and string is too long to be formatted */ |
| 1080 | luaL_addvalue(&b); /* keep entire string */ |
nothing calls this directly
no test coverage detected